16-56962002-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_000078.3(CETP):c.23C>T(p.Thr8Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000496 in 1,613,982 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T8N) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

CETP
NM_000078.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: -0.476

Variant links:

Genes affected

CETP (HGNC:1869): (cholesteryl ester transfer protein) The protein encoded by this gene is found in plasma, where it is involved in the transfer of cholesteryl ester from high density lipoprotein (HDL) to other lipoproteins. Defects in this gene are a cause of hyperalphalipoproteinemia 1 (HALP1). Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2013]

CETP links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.07097453).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CETP	NM_000078.3 link	c.23C>T	p.Thr8Ile	missense_variant	Exon 1 of 16	ENST00000200676.8	NP_000069.2	P11597-1A0A0S2Z3F6
CETP	NM_001286085.2 link	c.23C>T	p.Thr8Ile	missense_variant	Exon 1 of 15		NP_001273014.1	A0A0S2Z3I8B4DMZ5
CETP	XM_006721124.4 link	c.23C>T	p.Thr8Ile	missense_variant	Exon 1 of 9		XP_006721187.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CETP	ENST00000200676.8 link	c.23C>T	p.Thr8Ile	missense_variant	Exon 1 of 16	1	NM_000078.3	ENSP00000200676.3	P11597-1
CETP	ENST00000379780.6 link	c.23C>T	p.Thr8Ile	missense_variant	Exon 1 of 15	1		ENSP00000369106.2	P11597-2
CETP	ENST00000569082.1 link	n.21C>T		non_coding_transcript_exon_variant	Exon 1 of 9	5
CETP	ENST00000566128.1 link	c.-372C>T		upstream_gene_variant		5		ENSP00000456276.1	H3BRJ9

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152214

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251168

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135844

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000410

AC:

AN:

1461768

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727200

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152214

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74364

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000740

Hom.:

Bravo

AF:

0.0000151

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Mar 26, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces threonine, which is neutral and polar, with isoleucine, which is neutral and non-polar, at codon 8 of the CETP protein (p.Thr8Ile). This variant is present in population databases (no rsID available, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with CETP-related conditions. ClinVar contains an entry for this variant (Variation ID: 2627414). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Hyperalphalipoproteinemia 1

Uncertain:1

Neuberg Centre For Genomic Medicine, NCGM

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The missense variant p.T8I in CETP (NM_000078.3) has not been reported previously as a pathogenic variant nor as a benign variant, to our knowledge. The variant is observed in 1/34580 (0.0029%) alleles from individuals of Latino background in the gnomAD dataset (Exome Aggregation Consortium et al., 2016), but was not seen in the homozygous state. There is a moderate physicochemical difference between threonine and isoleucine. The p.T8I missense variant is predicted to be damaging by SIFT. For these reasons, this variant has been classified as Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.67

CADD

Benign

8.2

DANN

Benign

0.82

DEOGEN2

Benign

0.19

T;.

Eigen

Benign

-0.85

Eigen_PC

Benign

-0.79

FATHMM_MKL

Benign

0.029

LIST_S2

Benign

0.58

T;T

M_CAP

Benign

0.016

MetaRNN

Benign

0.071

T;T

MetaSVM

Benign

-0.95

MutationAssessor

Benign

0.69

N;N

PrimateAI

Benign

0.47

PROVEAN

Benign

-0.080

N;N

REVEL

Benign

0.025

Sift

Benign

0.083

T;T

Sift4G

Benign

0.47

T;T

Polyphen

0.15

B;B

Vest4

0.12

MVP

0.30

MPC

0.14

ClinPred

0.053

GERP RS

1.3

Varity_R

0.055

gMVP

0.29

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over